2013-2019 Ford Flex Power Liftgate Not Working: A Guide to the Motorized Struts

Understanding the Ford Flex Power Liftgate System

Before diagnosing a problem, it's critical to know which system your Ford Flex has. The optional power liftgate system is the one most prone to issues. This system uses two key components on each side: a motorized actuator (the lift support) and a standard gas support strut that helps carry the load. The motorized actuator is the part that actively pushes the gate open and pulls it closed. When it fails, the liftgate may become inoperable, struggle to move, or exhibit other strange behaviors. Manual liftgate models simply use two standard gas struts, which are much simpler and cheaper to replace.

Common Symptoms of a Failing Power Liftgate

When the power liftgate system begins to fail, you may notice one or more of the following symptoms:

• Liftgate struggles or fails to open/close: The motor may sound like it's running, but the gate barely moves or doesn't move at all. You might have to manually assist it.
• Grinding, clicking, or popping noises: Loud mechanical noises during operation often point to a stripped gear or a failing motor inside the actuator.
• Liftgate reverses direction: The gate may start to close, then suddenly stop and reverse back to the open position. This can sometimes be caused by a faulty pinch sensor, but can also indicate a failing actuator.
• Liftgate drifts down: If the liftgate opens but won't stay up, the gas pressure inside the support struts (both the motorized and non-motorized ones) has likely failed.
• System is completely dead: No sound or movement when pressing the button on the key fob, dashboard, or liftgate itself. This could be a fuse, a wiring issue, or a failed control module.
• 'Hatch Ajar' warning light: A faulty latch mechanism can sometimes cause the vehicle to think the hatch is open, which can lead to a dead battery as the body control module stays awake.
🎬 Watch: How to diagnose a faulty rear liftgate latch

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

As of early 2026, there are no specific recalls from the National Highway Traffic Safety Administration (NHTSA) for the power liftgate actuators or motors on the 2013-2019 Ford Flex. While other Ford models like the Escape have had TSBs for issues like the liftgate not latching correctly (TSB 19-2056), these do not officially apply to the Flex. Some owners have reported that a module reset or reprogram, similar to procedures for other Ford vehicles, can sometimes resolve issues, but this is not a guaranteed fix.

Diagnosing the Problem: Step-by-Step

1. Check the Pinch Sensors: The rubber strips running along the sides of the liftgate opening are pinch sensors. If they are dirty, deformed, or obstructed, they can falsely trigger the anti-pinch feature, causing the gate to reverse. Clean them thoroughly and ensure they are seated correctly.
2. Listen to the Motor: When you press the button, can you hear the motor trying to work? If you hear a whirring or grinding sound but the gate doesn't move, the actuator itself is likely the problem. If you hear nothing, the issue could be electrical (fuse, switch, or module).
3. Try to Help It: While an assistant presses the button, try to help the liftgate open or close. If a little bit of manual assistance allows it to complete the cycle, it's a strong sign that the motorized struts are too weak to lift the heavy gate on their own.
4. Check Fuses: Consult your owner's manual for the location of the power liftgate fuse and inspect it. This is a simple but often overlooked step.
5. Perform a System Reset: Disconnecting the vehicle's battery for about 30 minutes can sometimes reset the Rear Gate Trunk Module (RGTM) and clear temporary glitches. 🎬 See this video for Ford liftgate module reset tips Note that this will also reset your radio presets and other vehicle settings.

Buying a Used 2013-2019 Flex Power Liftgate Strut

A used OEM motorized strut can be a cost-effective solution compared to a new dealer part. Here’s what to look for when buying a recycled unit:

• Verify the Part Number: The left (driver-side) and right (passenger-side) motorized struts have different part numbers. Ensure you are buying the correct one for the side you are replacing. The left side is typically DA8Z-74406A11-A and the right is DA8Z-74406A10-A.
• Inspect the Electrical Connector: Check for any bent pins, corrosion, or damage to the wiring pigtail. A damaged connector is a major red flag.
• Check for Physical Damage: Look for any signs of bending in the rod, cracks in the motor housing, or significant rust. The part should be straight and solid.
• Ask About the Donor Vehicle: If possible, find out the mileage of the vehicle the part came from. A part from a lower-mileage Flex is generally a better bet.
• Why Used OEM is a Good Choice: For a complex part like this, a used OEM unit is often superior to a cheap new aftermarket alternative. The OEM part was designed to work perfectly with the vehicle's control module, ensuring the correct opening/closing speed and force. Some aftermarket units may not be properly calibrated, leading to operational issues.

Cost of Replacement

Note: Prices are estimates as of early 2026 and can vary by supplier and location. The main liftgate motor assembly is a separate part (DA8Z-14B351-A) and can cost over $220 for a new OEM unit.

Installation Guide (Difficulty: 2/5)

Replacing a power liftgate strut is a manageable DIY job for most people with basic tools. The most important part is ensuring the heavy liftgate is securely supported.

1. Support the Liftgate: Open the liftgate fully and securely prop it open.
2. Disconnect the Battery: To be safe, disconnect the negative terminal of the vehicle's battery.
3. Access the Strut: You may need to gently pry away a small amount of interior trim to access the mounting points and electrical connector.
4. Disconnect the Electrical Connector: Carefully unplug the electrical connector from the motorized strut.
5. Unbolt the Strut: The strut is typically held on by a bolt at the top and bottom. Use a socket wrench to remove these bolts.
6. Install the New Strut: Bolt the new strut into place. Do not overtighten the bolts.
7. Reconnect and Test: Reconnect the electrical connector and the vehicle's battery. Remove your liftgate support and test the power function. A re-initialization procedure may be required: fully open and close the gate manually once, then use the power button.

For vehicles with a manual liftgate, the process is simpler. The struts are held by metal clips. Use a small flathead screwdriver to pry the clip open, and the strut will pop off the ball stud.

Frequently Asked Questions (FAQ)